openwrt/target/linux/omap/patches-3.13/903-wl12xx-use-frequency-instead-of-enumerations-for-pdata-clocks.patch

Instead of defining an enumeration with the FW specific values for the
different clock rates, use the actual frequency instead.  Also add a
boolean to specify whether the clock is XTAL or not.

Change all board files to reflect this.

Additionally, this reverts commit 26f45c (ARM: OMAP2+: Legacy support
for wl12xx when booted with devicetree), since this is not be needed
anymore, now that DT support for WiLink is implemented.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>

---
 arch/arm/mach-davinci/board-da850-evm.c      |  3 +-
 arch/arm/mach-omap2/board-omap3evm.c         |  3 +-
 arch/arm/mach-omap2/board-zoom-peripherals.c |  3 +-
 arch/arm/mach-omap2/devices.c                | 39 -------------------
 drivers/net/wireless/ti/wl12xx/main.c        | 58 +++++++++++++++++++++++++++-
 drivers/net/wireless/ti/wl12xx/wl12xx.h      | 28 ++++++++++++++
 include/linux/wl12xx.h                       | 27 ++-----------
 7 files changed, 93 insertions(+), 68 deletions(-)

--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -1711,6 +1711,43 @@ static struct ieee80211_sta_ht_cap wl12x
 		},
 };
 
+static const struct wl12xx_clock wl12xx_refclock_table[] = {
+	{ 19200000,	false,	WL12XX_REFCLOCK_19	},
+	{ 26000000,	false,	WL12XX_REFCLOCK_26	},
+	{ 26000000,	true,	WL12XX_REFCLOCK_26_XTAL	},
+	{ 38400000,	false,	WL12XX_REFCLOCK_38	},
+	{ 38400000,	true,	WL12XX_REFCLOCK_38_XTAL	},
+	{ 52000000,	false,	WL12XX_REFCLOCK_52	},
+	{ 0,		false,	0 }
+};
+
+static const struct wl12xx_clock wl12xx_tcxoclock_table[] = {
+	{ 16368000,	true,	WL12XX_TCXOCLOCK_16_368	},
+	{ 16800000,	true,	WL12XX_TCXOCLOCK_16_8	},
+	{ 19200000,	true,	WL12XX_TCXOCLOCK_19_2	},
+	{ 26000000,	true,	WL12XX_TCXOCLOCK_26	},
+	{ 32736000,	true,	WL12XX_TCXOCLOCK_32_736	},
+	{ 33600000,	true,	WL12XX_TCXOCLOCK_33_6	},
+	{ 38400000,	true,	WL12XX_TCXOCLOCK_38_4	},
+	{ 52000000,	true,	WL12XX_TCXOCLOCK_52	},
+	{ 0,		false,	0 }
+};
+
+static int wl12xx_get_clock_idx(const struct wl12xx_clock *table,
+				u32 freq, bool xtal)
+{
+	int i = 0;
+
+	while(table[i].freq != 0) {
+		if ((table[i].freq == freq) &&
+		    (table[i].xtal == xtal))
+			return table[i].hw_idx;
+		i++;
+	};
+
+	return -EINVAL;
+}
+
 static int wl12xx_setup(struct wl1271 *wl)
 {
 	struct wl12xx_priv *priv = wl->priv;
@@ -1732,7 +1769,16 @@ static int wl12xx_setup(struct wl1271 *w
 	wl12xx_conf_init(wl);
 
 	if (!fref_param) {
-		priv->ref_clock = pdata->board_ref_clock;
+		priv->ref_clock = wl12xx_get_clock_idx(wl12xx_refclock_table,
+						       pdata->ref_clock_freq,
+						       pdata->ref_clock_xtal);
+		if (priv->ref_clock < 0) {
+			wl1271_error("Invalid ref_clock frequency (%d Hz, %s)",
+				pdata->ref_clock_freq,
+				pdata->ref_clock_xtal ? "XTAL" : "not XTAL");
+
+			return priv->ref_clock;
+		}
 	} else {
 		if (!strcmp(fref_param, "19.2"))
 			priv->ref_clock = WL12XX_REFCLOCK_19;
@@ -1751,7 +1797,15 @@ static int wl12xx_setup(struct wl1271 *w
 	}
 
 	if (!tcxo_param) {
-		priv->tcxo_clock = pdata->board_tcxo_clock;
+		priv->tcxo_clock = wl12xx_get_clock_idx(wl12xx_tcxoclock_table,
+							pdata->tcxo_clock_freq,
+							true);
+		if (priv->tcxo_clock < 0) {
+			wl1271_error("Invalid tcxo_clock frequency (%d Hz)",
+				pdata->tcxo_clock_freq);
+
+			return priv->tcxo_clock;
+		}
 	} else {
 		if (!strcmp(tcxo_param, "19.2"))
 			priv->tcxo_clock = WL12XX_TCXOCLOCK_19_2;
--- a/drivers/net/wireless/ti/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h
@@ -79,4 +79,32 @@ struct wl12xx_priv {
 	struct wl127x_rx_mem_pool_addr *rx_mem_addr;
 };
 
+/* Reference clock values */
+enum {
+	WL12XX_REFCLOCK_19	= 0, /* 19.2 MHz */
+	WL12XX_REFCLOCK_26	= 1, /* 26 MHz */
+	WL12XX_REFCLOCK_38	= 2, /* 38.4 MHz */
+	WL12XX_REFCLOCK_52	= 3, /* 52 MHz */
+	WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
+	WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
+};
+
+/* TCXO clock values */
+enum {
+	WL12XX_TCXOCLOCK_19_2	= 0, /* 19.2MHz */
+	WL12XX_TCXOCLOCK_26	= 1, /* 26 MHz */
+	WL12XX_TCXOCLOCK_38_4	= 2, /* 38.4MHz */
+	WL12XX_TCXOCLOCK_52	= 3, /* 52 MHz */
+	WL12XX_TCXOCLOCK_16_368	= 4, /* 16.368 MHz */
+	WL12XX_TCXOCLOCK_32_736	= 5, /* 32.736 MHz */
+	WL12XX_TCXOCLOCK_16_8	= 6, /* 16.8 MHz */
+	WL12XX_TCXOCLOCK_33_6	= 7, /* 33.6 MHz */
+};
+
+struct wl12xx_clock {
+	u32	freq;
+	bool	xtal;
+	u8	hw_idx;
+};
+
 #endif /* __WL12XX_PRIV_H__ */
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -26,28 +26,6 @@
 
 #include <linux/err.h>
 
-/* Reference clock values */
-enum {
-	WL12XX_REFCLOCK_19	= 0, /* 19.2 MHz */
-	WL12XX_REFCLOCK_26	= 1, /* 26 MHz */
-	WL12XX_REFCLOCK_38	= 2, /* 38.4 MHz */
-	WL12XX_REFCLOCK_52	= 3, /* 52 MHz */
-	WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
-	WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
-};
-
-/* TCXO clock values */
-enum {
-	WL12XX_TCXOCLOCK_19_2	= 0, /* 19.2MHz */
-	WL12XX_TCXOCLOCK_26	= 1, /* 26 MHz */
-	WL12XX_TCXOCLOCK_38_4	= 2, /* 38.4MHz */
-	WL12XX_TCXOCLOCK_52	= 3, /* 52 MHz */
-	WL12XX_TCXOCLOCK_16_368	= 4, /* 16.368 MHz */
-	WL12XX_TCXOCLOCK_32_736	= 5, /* 32.736 MHz */
-	WL12XX_TCXOCLOCK_16_8	= 6, /* 16.8 MHz */
-	WL12XX_TCXOCLOCK_33_6	= 7, /* 33.6 MHz */
-};
-
 struct wl1251_platform_data {
 	void (*set_power)(bool enable);
 	/* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
@@ -57,8 +35,9 @@ struct wl1251_platform_data {
 
 struct wl12xx_platform_data {
 	int irq;
-	int board_ref_clock;
-	int board_tcxo_clock;
+	int ref_clock_freq;	/* in Hertz */
+	bool ref_clock_xtal;	/* specify whether the clock is XTAL or not */
+	int tcxo_clock_freq;	/* in Hertz, tcxo is always XTAL */
 };
 
 #ifdef CONFIG_WILINK_PLATFORM_DATA
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -50,8 +50,8 @@ static void __init __used legacy_init_wl
 {
 	int res;
 
-	wl12xx.board_ref_clock = ref_clock;
-	wl12xx.board_tcxo_clock = tcxo_clock;
+	wl12xx.ref_clock_freq = ref_clock;
+	wl12xx.tcxo_clock_freq = tcxo_clock;
 	wl12xx.irq = gpio_to_irq(gpio);
 
 	res = wl12xx_set_platform_data(&wl12xx);
@@ -85,12 +85,12 @@ static void __init omap3_igep0020_legacy
 
 static void __init omap3_evm_legacy_init(void)
 {
-	legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
+	legacy_init_wl12xx(38400000, 0, 149);
 }
 
 static void __init omap3_zoom_legacy_init(void)
 {
-	legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
+	legacy_init_wl12xx(26000000, 0, 162);
 }
 #endif /* CONFIG_ARCH_OMAP3 */
 
@@ -98,15 +98,15 @@ static void __init omap3_zoom_legacy_ini
 static void __init omap4_sdp_legacy_init(void)
 {
 	omap_4430sdp_display_init_of();
-	legacy_init_wl12xx(WL12XX_REFCLOCK_26,
-			   WL12XX_TCXOCLOCK_26, 53);
+	legacy_init_wl12xx(26000000,
+			   26000000, 53);
 }
 
 static void __init omap4_panda_legacy_init(void)
 {
 	omap4_panda_display_init_of();
 	legacy_init_ehci_clk("auxclk3_ck");
-	legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
+	legacy_init_wl12xx(38400000, 0, 53);
 }
 #endif